masslogger | 12e063fa87cf457809c5ccc5e850c2f471bfedec9237d611903691e8ba604ee3

General

Target

Wsp1Y2kaMZ5npFn.exe
Size

866KB
MD5

05e6d0fec133b11165f4db25f7256682
SHA1

609af629da07ae0ebbe39c2de2502752f5e4553f
SHA256

6030faadae8d2aa1b94b06da9c0d4ed3ce33076a1bc04218027519b1043a6a95
SHA512

fd580785c67b8934ea27005c161258dfa8316631b35670a3e208c09464bab34a3b45d246763835dd7b02a9c104c237516e5a3dfb881d465c53e29f4f88c0be18
SSDEEP

12288:P+jP6eP9b2N+P7SeThWBfeiRR/Zqa5vQLuB0pnebzv019XdctgSq3X0OywVtBycv:GjP6+3P7SG8Rh51819tN7VtB7

Score

10^/10

masslogger defense_evasion discovery spyware stealer

Malware Config

Signatures

MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger

MassLogger Main payload 1 IoCs

resource	yara_rule
behavioral2/memory/1080-9-0x0000000000400000-0x0000000000486000-memory.dmp	family_masslogger

Deletes itself 1 IoCs

pid	Process
556	powershell.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3528 set thread context of 1080	3528	Wsp1Y2kaMZ5npFn.exe	99

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Wsp1Y2kaMZ5npFn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Wsp1Y2kaMZ5npFn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3528	Wsp1Y2kaMZ5npFn.exe
3528	Wsp1Y2kaMZ5npFn.exe
3528	Wsp1Y2kaMZ5npFn.exe
3528	Wsp1Y2kaMZ5npFn.exe
3528	Wsp1Y2kaMZ5npFn.exe
3528	Wsp1Y2kaMZ5npFn.exe
3528	Wsp1Y2kaMZ5npFn.exe
1080	Wsp1Y2kaMZ5npFn.exe
1080	Wsp1Y2kaMZ5npFn.exe
556	powershell.exe
556	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3528	Wsp1Y2kaMZ5npFn.exe
Token: SeDebugPrivilege	1080	Wsp1Y2kaMZ5npFn.exe
Token: SeDebugPrivilege	556	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3528 wrote to memory of 2800	3528	Wsp1Y2kaMZ5npFn.exe	97
PID 3528 wrote to memory of 2800	3528	Wsp1Y2kaMZ5npFn.exe	97
PID 3528 wrote to memory of 2800	3528	Wsp1Y2kaMZ5npFn.exe	97
PID 3528 wrote to memory of 1840	3528	Wsp1Y2kaMZ5npFn.exe	98
PID 3528 wrote to memory of 1840	3528	Wsp1Y2kaMZ5npFn.exe	98
PID 3528 wrote to memory of 1840	3528	Wsp1Y2kaMZ5npFn.exe	98
PID 3528 wrote to memory of 1080	3528	Wsp1Y2kaMZ5npFn.exe	99
PID 3528 wrote to memory of 1080	3528	Wsp1Y2kaMZ5npFn.exe	99
PID 3528 wrote to memory of 1080	3528	Wsp1Y2kaMZ5npFn.exe	99
PID 3528 wrote to memory of 1080	3528	Wsp1Y2kaMZ5npFn.exe	99
PID 3528 wrote to memory of 1080	3528	Wsp1Y2kaMZ5npFn.exe	99
PID 3528 wrote to memory of 1080	3528	Wsp1Y2kaMZ5npFn.exe	99
PID 3528 wrote to memory of 1080	3528	Wsp1Y2kaMZ5npFn.exe	99
PID 3528 wrote to memory of 1080	3528	Wsp1Y2kaMZ5npFn.exe	99
PID 1080 wrote to memory of 556	1080	Wsp1Y2kaMZ5npFn.exe	101
PID 1080 wrote to memory of 556	1080	Wsp1Y2kaMZ5npFn.exe	101
PID 1080 wrote to memory of 556	1080	Wsp1Y2kaMZ5npFn.exe	101

C:\Users\Admin\AppData\Local\Temp\Wsp1Y2kaMZ5npFn.exe
"C:\Users\Admin\AppData\Local\Temp\Wsp1Y2kaMZ5npFn.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3528
- C:\Users\Admin\AppData\Local\Temp\Wsp1Y2kaMZ5npFn.exe
  "{path}"
  2⤵
  PID:2800
- C:\Users\Admin\AppData\Local\Temp\Wsp1Y2kaMZ5npFn.exe
  "{path}"
  2⤵
  PID:1840
- C:\Users\Admin\AppData\Local\Temp\Wsp1Y2kaMZ5npFn.exe
  "{path}"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1080
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\Wsp1Y2kaMZ5npFn.exe'
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:556

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

1

T1070

File Deletion

1

T1070.004

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Wsp1Y2kaMZ5npFn.exe.log

Filesize
412B

MD5
e72888b5960716cf170f3e1becd14370

SHA1
0aeefd2d4a7948a03aad625ca86fc34d79adf248

SHA256
8317f594f74040b50e1b88f4aba5e6da3423bf47fe91df59e6e85f37b1f7e0ab

SHA512
9cdfda6fc4f324dfd8d53b46610114252431a5d26296a6f3d606b8ffeef172263fbde9ce0a1b2b9232dabcdabd33d6677e9a5f7693b175f24cea622c31b5c6b7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_obht0nbj.wft.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/556-35-0x0000000005630000-0x0000000005984000-memory.dmp

Filesize
3.3MB

Download
memory/556-41-0x00000000061C0000-0x00000000061E2000-memory.dmp

Filesize
136KB

Download
memory/556-39-0x0000000006100000-0x000000000611A000-memory.dmp

Filesize
104KB

Download
memory/556-38-0x0000000007230000-0x00000000078AA000-memory.dmp

Filesize
6.5MB

Download
memory/556-37-0x0000000005C10000-0x0000000005C5C000-memory.dmp

Filesize
304KB

Download
memory/556-36-0x0000000005BF0000-0x0000000005C0E000-memory.dmp

Filesize
120KB

Download
memory/556-19-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/556-40-0x0000000006E50000-0x0000000006EE6000-memory.dmp

Filesize
600KB

Download
memory/556-44-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/556-25-0x0000000005550000-0x00000000055B6000-memory.dmp

Filesize
408KB

Download
memory/556-24-0x00000000054B0000-0x00000000054D2000-memory.dmp

Filesize
136KB

Download
memory/556-22-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/556-23-0x0000000004D50000-0x0000000005378000-memory.dmp

Filesize
6.2MB

Download
memory/556-21-0x0000000002330000-0x0000000002366000-memory.dmp

Filesize
216KB

Download
memory/556-20-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/1080-17-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/1080-12-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/1080-18-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/1080-16-0x0000000005360000-0x00000000053C6000-memory.dmp

Filesize
408KB

Download
memory/1080-15-0x00000000058A0000-0x0000000005E44000-memory.dmp

Filesize
5.6MB

Download
memory/1080-14-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/1080-9-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/3528-8-0x0000000007C60000-0x0000000007CF8000-memory.dmp

Filesize
608KB

Download
memory/3528-13-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/3528-0-0x000000007486E000-0x000000007486F000-memory.dmp

Filesize
4KB

Download
memory/3528-7-0x0000000005520000-0x00000000055BC000-memory.dmp

Filesize
624KB

Download
memory/3528-6-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/3528-5-0x000000007486E000-0x000000007486F000-memory.dmp

Filesize
4KB

Download
memory/3528-4-0x0000000005070000-0x0000000005102000-memory.dmp

Filesize
584KB

Download
memory/3528-3-0x0000000004DF0000-0x0000000004E02000-memory.dmp

Filesize
72KB

Download
memory/3528-2-0x0000000004EC0000-0x0000000004F5C000-memory.dmp

Filesize
624KB

Download
memory/3528-1-0x0000000000430000-0x000000000050E000-memory.dmp

Filesize
888KB

Download

Analysis

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